a Libell ul, Loll Jujlo Emirates National Schools Unit 2: Continuity Summative 1 Name . Date ID Standards: 2.6 Derivative Rules: Constant, Sum, Difference, and Constant Multiple 1.E Apply appropriate mathematical rules or procedures, Instruction: For each item, clear working must be shown to be awarded full marks. 1) [DOK 1] Given that f (x) = x (x - x-' ), then an expression for f' (x)? (A) 3x (2x + x2) (B) 5x -2x (C) 5x* + 2x (D) 3x2 (2x-x-2 ) [1 mark] 2) [DOK 1] What is -" (2x tan x)? (A) 2 tanx+ 2xsec x (B) 2sec- x (C) 2 tan x + 2xsec x (D) 2 tan x - 2xsec x [1 mark]